Visible‐Light‐Driven Intermolecular Reductive Ene–Yne Coupling by Iridium/Cobalt Dual Catalysis for C(sp
<sup>3</sup>
)−C(sp
<sup>2</sup>
) Bond Formation
作者:María J. González、Bernhard Breit
DOI:10.1002/chem.201903708
日期:2019.12.10
A new methodology to form C(sp3 )-C(sp2 ) bonds by visible-light-driven intermolecular reductive ene-yne coupling has been successfully developed. The process relies on the ability of the Hantzsch ester to contribute in both SET and HAT processes through a unified cobalt and iridium catalytic system. This procedure avoids the use of stoichiometric amounts of reducing metallic reagents, which is translated
Reduction of titanocene dichloride with dysprosium: access to a stable titanocene(<scp>ii</scp>) equivalent for phosphite-free Takeda carbonyl olefination
A new titanocene(ii) equivalent obtained from the reduction of titanocene dichloride with dysprosium allows phosphite-free and simplified Takeda carbonyl olefination reactions.
Perfuming ingredients of the floral and/or anis type
申请人:Moretti Robert
公开号:US08815792B2
公开(公告)日:2014-08-26
The present invention concerns a compound of formula wherein R represents a hydrogen atom or a C1-2 alkyl or alkoxyl group; each R1, R2 or R3 represents a hydrogen atom or a methyl or ethyl group; and X represents a CHO, COOR4 or CN group, R4 being a methyl or ethyl group; and at least one of said R, R1 or R2 represents a group containing at least one carbon atom; and it use as perfuming ingredient, for instance to impart odor notes of the floral and/or anis type.
PERFUMING INGREDIENTS OF THE FLORAL AND/OR ANIS TYPE
申请人:Moretti Robert
公开号:US20110200546A1
公开(公告)日:2011-08-18
The present invention concerns a compound of formula wherein R represents a hydrogen atom or a C
1-2
alkyl or alkoxyl group; each R
1
, R
2
or R
3
represents a hydrogen atom or a methyl or ethyl group; and X represents a CHO, COOR
4
or CN group, R
4
being a methyl or ethyl group; and at least one of said R, R
1
or R
2
represents a group containing at least one carbon atom; and it use as perfuming ingredient, for instance to impart odor notes of the floral and/or anis type.